Earthquake with magnitude of ML 1.4 on date 19-08-2019 and time 06:31:30 (Italy) in region 3 km NE Caltabellotta (AG)

A magnitude ML 1.4 earthquake occured in region: 3 km NE Caltabellotta (AG), on

  • 19-08-2019 04:31:30 (UTC)
  • 19-08-2019 06:31:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.6, 13.23 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Caltabellotta AG 3 3681 3681
Burgio AG 5 2672 6353
Villafranca Sicula AG 5 1410 7763
Lucca Sicula AG 7 1805 9568
Giuliana PA 8 1952 11520
Chiusa Sclafani PA 9 2838 14358
Calamonaci AG 10 1339 15697
Ribera AG 12 19232 34929
Bisacquino PA 12 4599 39528
Sambuca di Sicilia AG 12 5877 45405
Contessa Entellina PA 15 1766 47171
Palazzo Adriano PA 16 2135 49306
Campofiorito PA 17 1302 50608
Sciacca AG 17 40928 91536
Bivona AG 18 3717 95253
Alessandria della Rocca AG 20 2988 98241

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km NW of Agrigento (59770 inhabitants)
57 Km E of Mazara del Vallo (51718 inhabitants)
58 Km S of Palermo (674435 inhabitants)
58 Km SW of Bagheria (55387 inhabitants)
74 Km E of Marsala (83194 inhabitants)
74 Km W of Caltanissetta (63360 inhabitants)
78 Km SE of Trapani (68759 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 1000 ML 1.4 2019-08-19
04:31:30
37.6 13.23 10 2019-11-13
14:31:00
Bollettino Sismico Italiano INGV 72048681
Rev 100 ML 1.5 2019-08-19
04:31:28
37.53 13.38 11 2019-08-19
04:54:15
Sala Sismica INGV-Roma 71616691
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-19 04:31:30 ± 0.85
Latitude 37.60 ± 0.05
Longitude 13.23 ± 0.06
Depth (km) 10 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 72048681

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 6743
Semi-minor axis of confidence ellipse (meter) 4308
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 141
Circular confidence region, given by single value of horizontal uncertainty (meter) 6740
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 251
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.63
Epicentral distance of station closest to the epicenter (degree) 0.03058
Epicentral distance of station farthest from the epicenter (degree) 0.268
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 72048681
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-09-27 14:54:08

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 71616691
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-19 04:54:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SCIAC.HHZ. 2019-08-19T04:31:37.26 0.6 undecidable manual S 230 0.1367 123 0.56 45
IV.CRJA.HHZ. 2019-08-19T04:31:36.88 0.1 undecidable manual P 317 0.268 50 0.36 93
IV.MMGO.HHN. 2019-08-19T04:31:35.08 0.3 undecidable manual P 286 0.2113 113 -0.42 70
MN.CLTB.HHZ. 2019-08-19T04:31:34.80 0.6 undecidable manual S 208 0.0306 161 0.75 43
IV.SCIAC.HHZ. 2019-08-19T04:31:33.63 0.1 undecidable manual P 230 0.1367 123 -0.4 95
MN.CLTB.HHZ. 2019-08-19T04:31:32.27 0.1 undecidable manual P 208 0.0306 161 -0.23 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
MN.CLTB.HHE. ML:1.3 0.0003457042 0.4416 AML other m 2019-08-19T04:31:34.81
MN.CLTB.HHN. ML:1.5 0.0005972337 0.4576 AML other m 2019-08-19T04:31:35.57
IV.CPTP.HHE. ML:1.4 3.6421685E-5 0.24 AML other m 2019-08-19T04:31:38.79
IV.CPTP.HHN. ML:1.4 3.4017185E-5 0.24 AML other m 2019-08-19T04:31:38.69
IV.SCIAC.HHN. ML:1.2 0.00015611505 0.2208 AML other m 2019-08-19T04:31:38.65
IV.SCIAC.HHE. ML:1.2 0.00016002795 0.1824 AML other m 2019-08-19T04:31:39.37
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download